We in the UK had a singer years ago called James who sang a song called Sit Down. I thought the lyrics said: "Sit down if your pleased", it was actually "Sit down next to me."
A childhood belief about misheard lyrics

others believed things like this
- Until about age 9, I thought there was a country called "Operaland" where everyone sang instead of talking.Anon
- I thought that singer/songwriter was spelled this way: sing-a-song-writer...Anon
- When I was little i thought lb for pounds was pronounced lubs, and i called them that for 2 years. Anon
- I believed that the breed of dog called Boxer was called that because they could stand up and box.Anon
- I use to think that Bruce Springsteen's song "growing up" was called "throwing up"— glowworm
- I used to think the song Bette Davis Eyes was called 'she's got better days besides'.— JJ Simpson